Fountain pen



, .Sept 22, 1925# H. wENslNK FOUNTAIN FEN Filed haren 23. 1 925 INVENTOR. )I T /VmJjrL/Z @ff/u; T47? i ATTORNEY.

n 561g l,Y mman es@ Patented Sept. 2,2, 1925.

@UNI-Ten. STAT 'HENRY WENSINK, OF GRAND RAPIDS, MICHIGAN.

FOUNTAIN `rEN.

Application filed March 23,1925.v seriai No. 17,528.

To all whom it 'may cof/warn.' Y

Beit known that I, HENRY WENsINK, a citizen of the United States, Vresiding at Grand Rapids, in the county of Kent and State offMichigan, have invented new and useful Improvements in Fountain Pens, of which the following is a specification.A

Thepresent invention relates to fountain pens; and its object is, generally, to provide such a pen improved in certain respects hereinafter appearing; and more particularly, to provide a fountain pen having improved means for venting the air therein in the operation of filling the pen with ink;v and further, to provide improved means for thus lilling the pen. y f

These and any other objects hereinafter appearing are attained by, and the invention finds preferable embodiment in, the fountain pen hereinafter particularly described in the body of this specification and illustrated by the accompanying drawings, in which Figure 1 is a central longitudinal sectional view of a fountain pen;

Figure 2 is a like view thereof, seen from a slightly different angle, and showing the parts in another position;

Figure 3 is a side view of a piston and connected parts;

Figure 4 is a plan view of a valve;

Figure 5 is a side view thereof;

Figure 6 is a view of the plug whereby the pen point is held in the bottom of the pen; and

Figure 7 is a cross sectional view of the same taken on line 7-7 of Figure 6.

The fountain pen illustrated by the accompanying drawings has a hollow cylindrical barrel 1 adapted to contain the ink, this barrel having a bottom comprising a plug 2 held frictionally and wedgingly or in any sufiiciently tight and secure manner in the lower end of the hollow barrel, said bottom comprising also the plug 3 tightly fitting in the bore 4 of the plug 2, the pen point 5 being wedgingly held in said bore by the plug 3. This second plug 3 has the ink-feeding passage 6 leading from the in* terior of the barrel to the pen point, and has also an air passage 7. A tube 8 carried by the plug 3 and extending upwardly therefrom in the barrel forms a continuation of this air passage. A sleeve 9 fits around the tube 8 and is slidable therealong by the knob or handle 20 extending from the upper end of the barrel. This sleeve has a port 10 in its side through which air may pass into the v tubes upper end-2l when the sleeveis slid upwardly to the position seen in Figure 1, the port however `being closed when Lthe sleeve is slid downwardly to a position in which the `port has passed below the upper end of the tube as seen in Figure 2. A piston 11 is slidable along the barrel and kmay be provided with piston rings 12. v This piston has a central opening through which the sleeve passes, and at its lower-side has a valve seat 13; The 'sleeve carries aconical valve 111 adapted to be moved into and out of seating position on the valve seat by the upward and downward movements respectively of the sleeve. A collar 15 is carried by the sleeve a short distancev above the piston, which thus has a limited axial movement relatively to the sleeve between the valve 14 below and the collar 15 above the piston.

The barrel may be filled with ink by drawing the sleeve by its knob 2O upwardly, which operation sucks ink into the barrel through the same passage 6 through which the pen point is fed during its writing operation. The sleeve being then vpushed downwardly the ink below the piston passes through the valve, which has been opened by the sleeves downward movement, and through openings 24- in the collar 15. The sleeve being now `drawn upwardly again'causes more ink to be drawn through the passage 6. By repeating these operations, the barrel may be filled to the desired degree.

It will be seen that when vthe ,sleeve is drawn upwardly the air in the barrel abover the piston is forced out through the open port 10, the tube 8 and the air passage 7; and that, the illing of the barrel being com` pleted, the sleeve is pushed in to the' position seen in Figure 2 wherein the port 10 is closed so that ink cannot pass therethrough.

It will be seen also that by the mechanism herein described and shown by the drawings p a fountain pen is provided which is adapted to contain a great amount of ink, inasmuch as its barrel may be completely filled or almost so.

Caps 18 and 19 are shown in Figure 2.

In the illustrated form, the sleeve 9 has a hard rubber casing 22 around its upper portion, and is provided with a stop 23.

The invention being intended tobe pointed out in the claims, is not to be limited t0 efr or by details of construction of the particular embodiment thereof illustrated by the drawings or hereinbefore described.

l claim:

1. ln a fountain pen: a hollow barrel adapted to Contain ink and having a bottom carrying the pen point and liavingvan inkfeeding passage to the pen point and an air )assae'e a tube extending u DwardlT inthebarrel and forming a continuation of the air passage; a sleeve fitting around and slidable along the tube and having a port thereinto; a piston slidably fitting in thel barrel and having a valveseat and a limited axial movement relatively to the sleeve; a valve carried by the sleeve and movable into and out of seating positionl on the valve seat by the sleeves upward and `downward Inovements respectively;

2. ln a fountain penzf a hollow barrel adapted to contain ink and having a bottom CarryingI the pen point andhaving an inkieeding passage to thevpenpoint and an air passage; a tube extending upwardly in the barrel andv forming a continuation of the air passage; a sleeve fitting around and slidable along the tube and having` a port thereinto open in an upwardly-slid position of the sleeve and Closed `in its downwardly-slid position; piston slidably fitting in the barrel and having a valve seat and a limited a-Xi'al movement relatively to the sleeve; a valve'earried b v the'sleeve and movable'int'o and out otl seating-Positionen the valve seat by the sleeves upward and downward movements respectively.

ln testimony whereof I have hereunto set my hand at Grand Rapids, Michigan', Athis 20th davof March, 1925.

HENRY VVENSINK. 

